10-Carboxyloganin, Normonoterpenoid Gluosides and Dinormonoterpenoid Glucosides from the Leaves of Cerbera manghas (Studies on Cerbera. 10)

10-Carboxyloganin was isolated along with β-D-glucosides of cyclopentano-normonoterpenoids and dinormonoterpenoids from the frozen fresh leaves of Cerbera manghas. Their structures were characterized by means of MS and NMR spectroscopy. The correlation of drying conditions of the leaves and yields of glucosides or allosides of cyclocerberidol and epoxycerberidol was studied. The dinormonoterpenoids were similar to those obtained from Thevetia peruviana.